The song:

http://www.youtube.com/watch?v=7S3LaxNTuYw

Lyrics:

When a good thing goes bad 
It’s not the end of the world
It’s the end of my world-when i used to be your girl
There’s no reason it happened- That’s why i’m overreacting- all because i don’t want things to change

I cry cause i miss you- and i can’t help but need you- that’s the wrong thing to do
Cuz i’ll want to touch you- and we know what that leads to-that’s the wrong thing to do
speak up i can’t hear you- afterall that we’ve been through- When you said ’ I love .. you’
When I say ‘I love you’- you end up leaving.. what can i do?

You said you need someone different- i know that, oh oh i know that.
I don’t want someone different - you know that , oh oh you know that.
Something’s been missing- I know that, oh oh, you know that oh
I don’t want someone different..


We live in a generation of, always breaking up, because we’re not together
But we don’t always have to be together
and i know that you’ll make time if you get the chance


I cry cause i miss you- and i can’t help but need you- that’s the wrong thing to do
Cuz i’ll want to touch you- and we know what that leads to-that’s the wrong thing to do
speak up i can’t hear you- afterall that we’ve been through- When you said ’ I love .. you’
When I say ‘I love you’- you end up leaving.. what can i do?


You said you need someone different- i know that, oh oh i know that.
I don’t want someone different - you know that , oh oh you know that.
Something’s been missing- I know that, oh oh, you know that oh
I don’t want someone different

Desciption:

This is personally one of my favorites. I just went through all this. I feel exactly the same.

She is the reason they broke up but they were in love. She doesn’t want to be with anyone else. She knows somethings been missing from the relationship. She wants to be with him badly,she knows he wants/needs someone different. The song explains it all.   They aren’t dating but they make it seem like it because they  don’t want each other to date someone else.